Travelling to the channels, Extraordinarily unlikely |
Travelling to the channels, Extraordinarily unlikely |
Aug 18 2011, 08:20 PM
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#16
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Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
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Guest_Bobby_* |
Aug 18 2011, 10:28 PM
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#17
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Guests |
Attn: Centsworth_ll Lets send another rover up there to repair Opportunity and once it's mission is done. Send the new rover to The Channels while
Opportunity drives around Endeavor or drives all the way into The Crater??? |
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Aug 19 2011, 09:49 PM
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#18
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Junior Member Group: Members Posts: 46 Joined: 14-January 06 Member No.: 645 |
Seeing Oppy's mission continue another 8 years .... PRICELESS.
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Aug 20 2011, 08:24 AM
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#19
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Member Group: Members Posts: 206 Joined: 15-August 07 From: Shrewsbury, Shropshire Member No.: 3233 |
It is arguable that the life expectancy of a MER rover should be measured not in SOLs but in kilometres driven. I think for example that over the rough terrain that Spirit was driving two wheels were always going to fail when Spirit had driven 7.73 kilometres. What this means is that if hypothetically Oppy's "wheels" were to last for another 5 km then it could be anything between 1 and 8 years before Oppy becomes a stationary Lander.
There is therefore a good case for Oppy IDDing every rock in sight and not travelling more than a few meters each month. There are probably enough different rock types for Oppy to IDD around Cape York and Cape Tribulation to last the rest of the mission. I do not think that Oppy's wheels could cope with the drive to the channels no matter how much time was available. I would be interested to know if JPL could have got more driving out of Spirit if they knew then what they know now? Presumably in retrospect they would have alternated driving directions on the trip to the Columbia Hills? Does rock climbing wear out wheels faster than driving on the flat? |
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Aug 20 2011, 01:40 PM
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#20
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Member Group: Members Posts: 214 Joined: 30-December 05 Member No.: 628 |
PaulM, those words make good sense to me. Field discoveries usually lead to a series of new questions before the answers begin to emerge - we don't know how long a process we are embarked upon at the present site given the already-degraded condition of the instruments. Only if this location proves to be a lot less interesting than we have every reason to expect it to be would we want to consider consuming any more of the rover's uncertain life expectancy in long-distance travel. Bring up the channels issue again in two years; if we still have any mobility, maybe I'll be able to muster some enthusiasm.
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Jan 16 2012, 06:25 PM
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#21
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Member Group: Members Posts: 206 Joined: 15-August 07 From: Shrewsbury, Shropshire Member No.: 3233 |
I am wondering if Oppy will be cleaned by the wind before the next Winter. I read that winds have been observed in the last decade moving sand dunes on the floor of Endeavour crater between Cape Tribulation and the central peak.
http://www.agu.org/pubs/crossref/2011/2010JE003675.shtml http://www.nasa.gov/mission_pages/mer/mult...y/pia13708.html I therefore wonder if Oppy should head for these dunes in a year's time if no cleaning occurs. Perhaps when Oppy has driven down the side of Cape Tribulation, sampling the clays all the way, it should carry on to the active dunes. I guess that this plan might not be "following the water". However, a live rover photographing active sand dunes is probably better than a dead rover sampling clays. |
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Jan 16 2012, 08:04 PM
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#22
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Senior Member Group: Members Posts: 4252 Joined: 17-January 05 Member No.: 152 |
I hadn't seen that paper before - I see that it includes an "inverse polar" view of Endeavour from James! Congratulations on getting your technique recognized!
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